I'm not the biggest Thor reader but I'm really enjoying the Mighty Thor. I'm curious how Cul Borson, went from being the world ending big bad the Serpent in Fear Itself to chumming it up with Odin in the The Mighty Thor.

Okay, so Odin had been dead since...2002? Fighting Surtur. When JMS relaunched Thor after Ragnarok, all Asgardians could be reincarnated to life, but Odin chose to remain in his personal afterlife so to pass on the reins of leadership to Thor.

When the Serpent resurfaced in Fear Itself, however, Odin re-emerged to claim control of Asgard. And when the Serpent fell, Odin brought his brother into the dimensional space where Asgard once resided before Thor brought it to Earth, exiling them from the realms of men.

In Original Sin, Odin and Cul were shown to be keeping each other company in the after-realm until Angela and the 10th Realm were rediscovered, bringing Odin back to "life" and Cul coming with him.

Odin is an old-school arrogant bastard with little taste for the ruling All-Mother and Congress of Realms set up in his absence. He obstinately refused to validate the congress, and his brother Cul stood with him. When Freyja fell into a death-like coma thanks to Loki's "treachery" (Long story), Odin handed over the rule of Asgard to Cul as his regent while he grieved for his wife. They share many of the same opinions about the Congress of Realms, the upstart female Thor, etc.

"If you want to tell people the truth, make them laugh, otherwise they'll kill you." -- Oscar Wilde

I never read Thor much before Aaron took over, but was Odin always this terrible? I get he's old and probably has some poor opinions towards women, but it feels more like someone was needed to be the "NOT MY THOR"

Loki seemingly sided with Malekith's Dark Congress of Realms by poisoning Freyja, leaving her in a death-like coma.

Secretly, however, Loki did this to save her life, for he knew Malekith intended to kill her otherwise. This act left Freyja alive and allowed Loki to infiltrate the Dark Congress.

I was puzzled by your answer until I realized how my question was ambiguous. When I asked what happened to Frigga I meant what happened to the character Frigga and why is Odin's wife Freyja now? Was Frigga retconned into Freyja?

Odin's wife was called "Frigga" up until the end of Fear Itself. "Frigga" contained elements of the Norse goddesses Frigg and Freya mixed together into a single Marvel character. Beginning with the reign of the All-Mother post-FI, the character formerly known as "Frigga" has been exclusively referred to as "Freyja" instead.

"If you want to tell people the truth, make them laugh, otherwise they'll kill you." -- Oscar Wilde

Odin's wife was called "Frigga" up until the end of Fear Itself. "Frigga" contained elements of the Norse goddesses Frigg and Freya mixed together into a single Marvel character. Beginning with the reign of the All-Mother post-FI, the character formerly known as "Frigga" has been exclusively referred to as "Freyja" instead.

That's what I was wondering on why the name changed. Thanks for the answer.